How to Use Negative Keywords to Stop Wasting Your Google Ads Budget

Every week that passes without a well-maintained negative keyword list is a week you're paying Google to show your ads to people who will never buy from you. Here's how to fix it.

What Negative Keywords Do

Negative keywords prevent your ads from showing for searches that contain specific terms. If you sell premium furniture and someone searches "cheap furniture," a negative keyword for "cheap" stops your ad from showing — saving your budget for buyers willing to pay your price.

Start With the Obvious Negatives

Every business has a set of terms that will never produce a customer. For service businesses: "free," "DIY," "how to," "template," "course." For product businesses: "used," "rental," "wholesale" (if you're retail), competitor names you can't win against on price. Add these before your campaigns even go live.

Mine Your Search Term Reports Weekly

The search term report shows every actual query that triggered your ads. Review it weekly. Any query that spent money without converting gets added to your negative keyword list. Any query pattern you see repeatedly gets added as a negative at the campaign level.

Use Negative Keyword Lists Efficiently

Build shared negative keyword lists in Google Ads and apply them across multiple campaigns. This means you only need to maintain one master list rather than adding negatives campaign by campaign.

The fix: Pull your search term report from the last 30 days. Add every irrelevant query that spent more than $5 without converting to your negative keyword list today.